adams.core.io
Class GzipUtils

java.lang.Object
  adams.core.io.GzipUtils

public class GzipUtils
extends Object

Helper class for gzip related operations.

Version:

$Revision: 4687 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

Field Summary

static String

EXTENSION the default extension.

Constructor Summary

GzipUtils()

Method Summary

static String	compress(File inputFile, int buffer) Compresses the specified gzip archive to a file with the ".gz" extension.
static String	compress(File inputFile, int buffer, File outputFile) Compresses the specified gzip archive.
static String	compress(File inputFile, int buffer, File outputFile, boolean removeInput) Compresses the specified gzip archive.
static String	decompress(File archiveFile, int buffer) Decompresses the specified gzip archive to a file without the ".gz" extension.
static String	decompress(File archiveFile, int buffer, File outputFile) Decompresses the specified gzip archive.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXTENSION

public static final String EXTENSION

the default extension.

See Also:

Constant Field Values

Constructor Detail

GzipUtils

public GzipUtils()

Method Detail

decompress

public static String decompress(File archiveFile,
                                int buffer)

Decompresses the specified gzip archive to a file without the ".gz" extension.

Parameters:

archiveFile - the gzip file to decompress

buffer - the buffer size to use

Returns:

the error message, null if everything OK

decompress

public static String decompress(File archiveFile,
                                int buffer,
                                File outputFile)

Decompresses the specified gzip archive.

Parameters:

archiveFile - the gzip file to decompress

buffer - the buffer size to use

outputFile - the destination file

Returns:

the error message, null if everything OK

compress

public static String compress(File inputFile,
                              int buffer)

Compresses the specified gzip archive to a file with the ".gz" extension.

Parameters:

inputFile - the gzip file to compress

buffer - the buffer size to use

Returns:

the error message, null if everything OK

compress

public static String compress(File inputFile,
                              int buffer,
                              File outputFile)

Compresses the specified gzip archive. Does not remove the input file.

Parameters:

inputFile - the gzip file to compress

buffer - the buffer size to use

outputFile - the destination file (the archive)

Returns:

the error message, null if everything OK

compress

public static String compress(File inputFile,
                              int buffer,
                              File outputFile,
                              boolean removeInput)

Compresses the specified gzip archive.

Parameters:

inputFile - the gzip file to compress

buffer - the buffer size to use

outputFile - the destination file (the archive)

removeInput - whether to remove the input file

Returns:

the error message, null if everything OK